﻿package phpas3{
	public function strncasecmp (argStr1:String, argStr2:String, len:int):int {
	    // Binary safe string comparison
	    //
	    // version: 1109.2015
	    // discuss at: http://phpjs.org/functions/strncasecmp
	    // +   original by: Saulo Vallory
	    // +      input by: Nate
	    // +   bugfixed by: Onno Marsman
	    // %          note: Returns < 0 if str1 is less than str2 ; > 0 if str1 is greater than str2 , and 0 if they are equal.
	    // *     example 1: strncasecmp('Price 12.9', 'Price 12.15', 2);
	    // *     returns 1: 0
	    // *     example 2: strncasecmp('Price 12.09', 'Price 12.15', 10);
	    // *     returns 2: -1
	    // *     example 3: strncasecmp('Price 12.90', 'Price 12.15', 30);
	    // *     returns 3: 8
	    // *     example 4: strncasecmp('Version 12.9', 'Version 12.15', 20);
	    // *     returns 4: 8
	    // *     example 5: strncasecmp('Version 12.15', 'Version 12.9', 20);
	    // *     returns 5: -8
	    var diff, i = 0;
	    var str1 = (argStr1 + '').toLowerCase().substr(0, len);
	    var str2 = (argStr2 + '').toLowerCase().substr(0, len);

	    if (str1.length !== str2.length) {
	        if (str1.length < str2.length) {
	            len = str1.length;
	            if (str2.substr(0, str1.length) == str1) {
	                return str1.length - str2.length; // return the difference of chars
	            }
	        } else {
	            len = str2.length;
	            // str1 is longer than str2
	            if (str1.substr(0, str2.length) == str2) {
	                return str1.length - str2.length; // return the difference of chars
	            }
	        }
	    } else {
	        // Avoids trying to get a char that does not exist
	        len = str1.length;
	    }

	    for (diff = 0, i = 0; i < len; i++) {
	        diff = str1.charCodeAt(i) - str2.charCodeAt(i);
	        if (diff !== 0) {
	            return diff;
	        }
	    }

	    return 0;
	}
}